Need guidance using threads for a barcode scanner application

Fri, 9 Nov 2012 12:17:17 -0800 (PST)

Thank you for any help you can provide!

I am writing a simple java mobile application that runs on a handheld motro=
la bar code scanner using java 1.4 (NSI CrEME CDC).

I used the motorola sample program to successfully run on the scanner. When=
 the user presses the trigger, the laser scans and displays the item code i=
n a text area widget. BUT, the example is written such that it runs directl=
y on the the initial thread, as represented below:

 public static void main(String argv[]){
        (new J_ScanSample1()).go();

 public synchronized void go(){
        while (!exiting){
                if (!stopScanning)
                {, this);}

After googling, I seem to believe I need to create the GUI in a runnable ob=
ject, and then create the scanner background process in another runnable ob=
ject, but could someone briefly give an example how I would do this? I thin=
k I launch the GUI as shown below, but then do I just set the scanner proce=
ss in another runnable object? How does the GUI get updated after the scann=
er reads in data?

 public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new ScannerApp().setVisible(true);

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